ISLA 1st QUARTER (Consumer Electronics - Audio System)
Quiz by Adonis Santiago
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Measures 5 skills fromGrade 9-12Electronic Products Assembly and Servicing (NC II)Philippines Curriculum: SHS Specialized Subjects
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This means arranging the tools and equipment in an order that promotes workflow.29
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This means arranging the tools and equipment in an order that promotes workflow.
To Calibrate a Multimeter (Analog), what comes after this step: Touch the test probe of your multimeter together.
Set the multimeter to the highest resistance range by turning the range
selector to the highest "ohm" setting
Take the reading on the deflection of the pointer in the scale.
Set the multimeter to the ohmmeter range (X1 Ohm for continuity or X10,
X100, X1k, or 10k Ohm/s for resistance reading).
Adjust the zero-ohm adjustment knob until the ohmmeter pointer read zero
The following are the first 4 steps in the Assembly of an Audio Amplifier. What is the third (3rd) step?
Check and Test all the components needed to assemble the project.
Prepare all the needed materials, tools, and testing equipment.
Check the Printed Circuit Board or PCB for an incomplete etched board.
Prepare your project plan.60sTLE_IAEPAS9- 12SCEP-APSIIIc-e-53
What is the waveform image that appears on the display of the oscilloscope when it initially turns on that means there is no signal or voltage present?
Sine Wave30sTLE_IAEPAS9- 12SCEP-APSIIIf-h-54
What is being measured on the volt/division scale of an oscilloscope?
The Frequency of the output and/or input signal
The Amplitude of supply voltage of the circuit
The amount of Time a signal completes a cycle
The voltage of the supply or signal60sTLE_IAEPAS9- 12SCEP-APSIIIf-h-54
During the process of diagnosing the faults and defects of consumer electronic products and systems. To prevent Electric shock from happening one must.
Work with both hand on the pockets.
Always turn off the equipment and unplug during the diagnostic.
Remove rubber shoes or sneakers when inside the room to maintain cleanliness.
Always assume that all the parts in the power supply are turned on and hot during the diagnostic.60sTLE_IAEPAS9- 12SCEP-APSIIIf-h-54
To protect the ear from sound with a noise level more than 85 dB while testing Amplifiers and Loudspeakers, or when operating motors and power drills. What set of P.P.E. is appropriate and follows the safety standard?
safety spectacles, goggles, face shield.
respirators, breathing apparatus
helmets, bump caps
ear plug, earmuff, canal caps.60sTLE_IAEPAS9- 12SCEP-APSIIIh-j-IVa-c-55
The following are preliminary steps in troubleshooting and repair of audio systems. What should come first.
Always have presence of mind.
Prepare all the minimum required tools and equipment to do the task.
Be sure all Hazards are identified and eliminated.
Wear appropriate personal protective equipment PPE60sTLE_IAEPAS9- 12SCEP-APSIIIh-j-IVa-c-55
An effective and safe way to discharge a large value filter capacitor is.
Place a 2.2 to 4.7 kilo ohms l0 watts ohms resistor across the two legs of the capacitor.
Large value capacitor should not be discharged.
Discharge it using your finger.
Shorting the capacitor terminal using the tip of a screwdriver or pliers60sTLE_IAEPAS9- 12SCEP-APSIVc-e-56
Way to identify a power supply that uses hot ground and cold ground is.
Modern equipment used Hot ground and Cold ground
The primary side is directly connected to AC line
Used a step down transformer to isolate the primary to the secondary supply line.
Type of power supply used is a linear power supply.60sTLE_IAEPAS9- 12SCEP-APSIVc-e-56
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